/Engine/Source/Runtime/Landscape/Classes/LandscapePhysicalMaterial.h
Initialize the task for a component. A task in progress can safely callInit()again to rekick the task. Returns false if no physical material needs to be rendered.
bool Init ( class [ULandscapeComponent](API\Runtime\Landscape\ULandscapeComponent) const * LandscapeComponent, uint32 InHash )